Significant re-working of the userdata handling and introduction of

vendordata.

Vendordata is a datasource provided userdata-like blob that is parsed
similiarly to userdata, execept at the user's pleasure.


cloudinit/config/cc_scripts_vendor.py: added vendor script cloud config

cloudinit/config/cc_vendor_scripts_per_boot.py: added vendor per boot
    cloud config

cloudinit/config/cc_vendor_scripts_per_instance.py: added vendor per
    instance vendor cloud config

cloudinit/config/cc_vendor_scripts_per_once.py: added per once vendor
    cloud config script

doc/examples/cloud-config-vendor-data.txt: documentation of vendor-data
    examples

doc/vendordata.txt: documentation of vendordata for vendors

(RENAMED) tests/unittests/test_userdata.py => tests/unittests/test_userdata.py
      TO: tests/unittests/test_userdata.py => tests/unittests/test_data.py:
    userdata test cases are not expanded to confirm superiority over vendor
    data.

bin/cloud-init: change instances of 'consume_userdata' to 'consume_data'

cloudinit/handlers/cloud_config.py: Added vendor script handling to default
    cloud-config modules

cloudinit/handlers/shell_script.py: Added ability to change the path key to
    support vendor provided 'vendor-scripts'. Defaults to 'script'.

cloudinit/helpers.py:
    - Changed ConfigMerger to include handling of vendordata.
    - Changed helpers to include paths for vendordata.

cloudinit/sources/__init__.py: Added functions for helping vendordata
    - get_vendordata_raw(): returns vendordata unprocessed
    - get_vendordata(): returns vendordata through userdata processor
    - has_vendordata(): indicator if vendordata is present
    - consume_vendordata(): datasource directive for indicating explict
        user approval of vendordata consumption. Defaults to 'false'

cloudinit/stages.py: Re-jiggered for handling of vendordata
    - _initial_subdirs(): added vendor script definition
    - update(): added self._store_vendordata()
    - [ADDED] _store_vendordata(): store vendordata
    - _get_default_handlers(): modified to allow for filtering
        which handlers will run against vendordata
    - [ADDED] _do_handlers(): moved logic from consume_userdata
        to _do_handlers(). This allows _consume_vendordata() and
        _consume_userdata() to use the same code path.
    - [RENAMED] consume_userdata() to _consume_userdata()
    - [ADDED] _consume_vendordata() for handling vendordata
        - run after userdata to get user cloud-config
        - uses ConfigMerger to get the configuration from the
            instance perspective about whether or not to use
            vendordata
    - [ADDED] consume_data() to call _consume_{user,vendor}data

cloudinit/util.py:
    - [ADDED] get_nested_option_as_list() used by cc_vendor* for
        getting a nested value from a dict and returned as a list
    - runparts(): added 'exe_prefix' for running exe with a prefix,
        used by cc_vendor*

config/cloud.cfg: Added vendor script execution as default

tests/unittests/test_runs/test_merge_run.py: changed consume_userdata() to
    consume_data()

tests/unittests/test_runs/test_simple_run.py: changed consume_userdata() to
    consume_data()

1 files changed, 5 insertions, 1 deletions

diff --git a/cloudinit/user_data.py b/cloudinit/user_data.py
index d49ea094..3032ef70 100644
--- a/cloudinit/user_data.py
+++ b/cloudinit/user_data.py
@@ -88,7 +88,11 @@ class UserDataProcessor(object):
 
     def process(self, blob):
         accumulating_msg = MIMEMultipart()
-        self._process_msg(convert_string(blob), accumulating_msg)
+        if isinstance(blob, list):
+            for b in blob:
+                self._process_msg(convert_string(b), accumulating_msg)
+        else:
+            self._process_msg(convert_string(blob), accumulating_msg)
         return accumulating_msg
 
     def _process_msg(self, base_msg, append_msg):